About Panax quinquefolius L.
Panax quinquefolius L. is a herbaceous perennial plant. It has an aromatic root that resembles a small parsnip, which forks as the plant matures. The species grows 6 to 18 inches (15 to 46 cm) tall, and usually bears three compound leaves sometimes called "prongs". Each leaf holds three to five leaflets that are 2 to 5 inches (5 to 13 cm) long. Panax quinquefolius is sometimes confused with wild sarsaparilla (Aralia nudicaulis), another member of the ivy family Araliaceae. The two species can be distinguished by their leaf structure: Panax quinquefolius has palmately compound leaves, with leaflets radiating from a single point, while Aralia nudicaulis has pinnately compound leaves, with leaflets arranged on either side of a central stalk. Panax quinquefolius is native to the eastern United States and southeastern Canada. It is found primarily in the Appalachian and Ozark mountains of the United States, where it prefers full shade environments in deciduous hardwood forests. It has been introduced and is cultivated in the Chinese provinces of Guizhou, Heilongjiang, Jiangsu, Jiangxi, Jilin, and Liaoning. Panax quinquefolius is a summer-flowering plant. In New England, flower buds and leaves emerge at the same time around mid-June, with flowers opening in July. Fruits mature to a deep red color by early September. Its seeds have a type of dormancy called morphophysiological dormancy, also sometimes called "double dormancy", which requires two full winters to break completely. Germination occurs eighteen months after the fruit first ripens. People requiring anticoagulant therapy such as warfarin should avoid using ginseng. It is not recommended for people with impaired liver or renal function, or for use during pregnancy or breastfeeding. Other reported adverse effects include headaches, anxiety, trouble sleeping, and upset stomach. Cultivated American ginseng crops can be contaminated by fungal molds, pesticides, and various metals and residues, which creates health concerns. As wild populations of American ginseng declined in the late 19th century, a market for cultivated ginseng developed. In 1887, tinsmith George Stanton planted ginseng in the forest around Apulia Station, a hamlet in the town of Fabius, Onondaga County, New York. In his 1908 obituary, Stanton was called the Father of the Cultivated Ginseng Industry. Today, American ginseng is grown commercially under artificial shade, and crops grown this way are harvested three to five years after seeding. It is also grown in forest-based, wild-simulated conditions, which require 6 to 10 years or more before harvest. By yield, forest farming of American ginseng is only one tenth as productive as commercial cultivation. In 2024, American ginseng exports, an indicator of total cultivation and production, listed the four largest producers as Canada with 2,974,971 kg (6,558,688 lb), China with 2,165,977 kg (4,775,162 lb), the United States with 428,357 kg (944,366 lb), and South Korea with 333,355 kg (734,922 lb). Some U.S. states encourage planting ginseng both to restore natural habitats and reduce harvesting pressure on remaining wild populations. American ginseng is woods-cultivated in Colorado, Kentucky, Maine, North Carolina, Tennessee, Vermont, Virginia, and West Virginia. American ginseng held minor importance in Native American folk medicine. The Iroquois ingested or smoked its roots as a panacea. The Menominee of northern Wisconsin used it as a tonic and to improve mental capability, while the Penobscot of Maine used it to promote fertility. The Seminole of Florida used it to treat gunshot wounds. In the late 19th century, the Cherokee sold large quantities of ginseng to traders for fifty cents a pound. According to ethnographer James Mooney, a decoction made from its roots was drunk to relieve headaches and cramps. There is currently no good evidence that American ginseng is effective for preventing or treating influenza or the common cold.
